Vehicle-jack.



. PATENTED AUG. 21, 1906.

W. H. HAMPSON.

' VEHICLE JACK. APPLIOATION FILED KAY 23,1906.

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WILLIAM H. HAMPSON, OF CAMBRIDGE, MASSACHUSETTS.

VEHlCLE JACl t.

To (1 whowt it may concern:

Be it known that 1, WILLIAM H. HAMPSON,

a citizen of the United States, residing at.

Cambridge, in the county of Middlesex and State of Massachusetts, have invented new and useful Improvements in Vehicle-Jacks, of which the following isa specification.

This invention relates to an improved jack The object ofthis invention is to-provide a I cheap, simple, and easily-operated device whichi's particularly adapted for holding the body-of an. automobile or other powervehicle raised, so that the tires of the wheels of saidfvchicle shall not rest upon the ground or floorwhen said vehicle is in the -garage and,

further, the object of this invention is to provide ajack the base of which is divided into twopar'ts, one adjustable relatively to the other for the purpose hereinafter described.

The invention consists in the combination and arrangement of pa-rts-set forth in the following specification and particularly pointed out in the claims thereof.

Referring to the drawings, Figure 1 is a side elevation. of my improved vehicle-jack,

showing a portion ofthe vehicle-wheel in broken lines raised from the ground and also showing the jack and wheel in fine dotted lines moved. forward. with the periphery of the wheel just coming into contact with the Fig. 2 is a section, partly in elevation, taken on line 2 2, Fig. 1.

Like numerals refer to like parts through- In the drawings, 5 is a jack consisting of a standard 6, having a base 7, the bottom surface 8 of which is preferably straight. A foot 9 is pivoted at 10 to thestandard 6, the bottom surface 1 1 of said foot being convexly curved, said foot being adjustable to different angles relatively to. the standard 6 by means of a screw '12, which has screw-threaded engagement with an ear 13, formin apart of said standard. The lowcrend of thescrew 12 projects into a slot 14, -formed in the foot 9, said screw having an annular groove 14 formed in its periphery. A pin 15 is fastened to the foot 9 and extends transversely across .the screw 12. lying within the annular groove 14, so that the screw 12 can be rotated to- Specification of Letters Patent.

Application filed an 23, 1906. Serial No. 818,346.

Patented Aug. 21, 1906.

or raise the foot 9 upon its pivot 10. e

It will be noted that the bottom surface 11 performs .in function a continuation of the ottom surface 8 of the standard 6 and that when the foot 9 is adjusted, by means of the screw 12, downwardly it will increase the dis: tance of the curved, bottom 11 from the center or tlie axle 16 of the vehicle which rests upon the holder 17, preferably concaved upon its top to receive said axle. The holder 17 is adjustable longitudinally of the standard 6 and is preferably rectangular in cross-section, extending downwardly into a correspondingly-shaped recess formed in the standard 6.

The holder 17 has teeth 18 formed-upon one side thereof, which engage a pawl 19, pivoted at 20 to the standard 6. The pawl 19 serves to lock the holder againshdownward motion relatively to said standard. Y My improved jack is weighted at one side of the median vertical plane thereof, so that in its normal position the jack stands with the standard 6 at an angle tothe floor upon which the jack rests, as shown in dotted lines,

Fig. 1, so that when the different jacks are laced in position for the vehicle to be raised om the floor they will all stand at an angle,

and when the vehicle is pushed against them the axles of said .vehicle will contact with the concave portion of the upper end of the jack or of the holder 17, and by furtherpushing upon-the vehicle the four jacks will rock upon their bases to the position shown in full lines,

Fig. 1, and the vehicle be raised so that the tires will'not'touch the floor or ground. The

weighting of the jack at one side of its median vertical lane is also disclosed in my ap lication for etters Patent hereinbefore re erred to, the device of the present application having for its chief object the adj ustability of the form of the bottom of the jack \taken as a wholethat is, of the angle of the curved portion 9 of the foot to the straight portion 8 of the base 7. It will be seen and understood that by adjusting the foot 9 at different angle's relatively to the standard 6 the jack in -its normalposition will stand with its median vertical plane at different angles to thefloor upon which its rests, according to the position of said foot relatively to said standard;

The general manner of operation of the jack h'ereinbefore specifically described is as follows: Four jacks are used, two under each axle of the vehicle, and, said jacks may be ward the right or left and respectively lower placed beneath said axles either by raising said parts, whereby said foot may beadjusted the axle with a jack and placing my im- 1 proved ja'ck thereunder, with the axle 16 located in the concave upper portion of the holder 17 and the jack in the position indicated in Fig. 1 in full lines with the flat bot .tom surface 8 resting upon the ground'or floor, or the jacks may be placed beneath the axle, as shown in dotted lines, Fig. 1, and the vehicle pushed to ard the left until the jack assumes the position shown in full lines in said figure, rocking upon the curved bottom surface of the foot 9 from one position to the other until finally it assumes the position.

show in Fig. l in full lines. When four acks are used in the manner last described,

the vehicle may be raised, together with the wheels thereof, from the ground or floor, so

that the tires do not rest upon the floor.-

When it is desired to use the vehicle, the same is pushed forward, and the different jacks Will rock from the position illustrated in full lines, Fig. 1, tothat shown in dotted lines until the periphery of the tire of each wheel rests upon the floor. The jacks are then removed and. the'vehicle is ready for use.

Having thus described my invention, What I claim, and desire by Letters Patent to secure, is-

1. A vehicle-jack comprising a standard adapted to support a vehicle, a foot pivoted to said standard having a convexly-curved bottom surface forming a continuation of the bottom surface of said standard,'and

means to adjust saidfoot to different angles relatively to said standard.

2. A vehicle-jack comprising a standard adapted to support a vehicle, a foot pivoted to said standard having a convexly-curved bottom surface forming a continuation of the bottom surface of said standard, and .a screw .connecting said standard and foot and having screw-threaded engagement with one of different angl to different angles relativelyto said standard. 3. A vehicle-jack comprising a standard adapted to support a vehicle, a foot pivoted to said standard having aconvexly-curved bottom surface forming a continuation of the bottom surface of said standard, and ascrew having screw-threaded engagement with said standard and rotatably connected to 'said foot, whereby said foot maybe adjusted. to

i relatively to said standard.

4. Ayehicle-jacli comprisinga standard adapted to support a vehicle, a foot pivoted to said standard having a convexly-curvml bottom surface forming a continuation of the bottom surface of said standard, a screw having screw-threaded connection with said standard, the lower end of said screw projecting into a slot provided in said foot, and a-pin fast to said foot and projecting into an annu lar groove in said screw, whereby said screw is rotatably connected to said foot and said foot may be adj Listed to different angles rcla' tively to said standard.

5. A vehicleack comprising a standard adapted to support a vehicle, a foot p voted to said standard having a convexly-curved bottom surface forming a continuation of the bottom surface of'said standard, and means to adjust said foot to different angles relatively' to said standard, said jackbeing weighted at one side of its median vertical plane, whereby the same stands normally in position to receive the axle of said vehicle when the wheels thereof are in contact With- In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

. WILLIAM H. HAMPSON.

Witnesses:

CHARLES S. GooDINe, ANNIE J. 'DAILEY. 

